140 lines
5.9 KiB
HTML
140 lines
5.9 KiB
HTML
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<title>backtrace::resolve - Rust</title>
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<p class='location'><a href='index.html'>backtrace</a></p><script>window.sidebarCurrent = {name: 'resolve', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<h1 class='fqn'><span class='in-band'>Function <a href='index.html'>backtrace</a>::<wbr><a class="fn" href=''>resolve</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</span><a class='srclink' href='../src/backtrace/symbolize/mod.rs.html#39-41' title='goto source code'>[src]</a></span></h1>
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<pre class='rust fn'>pub fn resolve<F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(&<a class="struct" href="../backtrace/struct.Symbol.html" title="struct backtrace::Symbol">Symbol</a>)>(addr: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.pointer.html">*mut </a><a class="enum" href="https://doc.rust-lang.org/nightly/std/os/raw/enum.c_void.html" title="enum std::os::raw::c_void">c_void</a>, cb: F)</pre><div class='docblock'><p>Resolve an address to a symbol, passing the symbol to the specified
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closure.</p>
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<p>This function will look up the given address in areas such as the local
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symbol table, dynamic symbol table, or DWARF debug info (depending on the
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activated implementation) to find symbols to yield.</p>
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<p>The closure may not be called if resolution could not be performed, and it
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also may be called more than once in the case of inlined functions.</p>
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<p>Symbols yielded represent the execution at the specified <code>addr</code>, returning
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file/line pairs for that addres (if available).</p>
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<h1 id='example' class='section-header'><a href='#example'>Example</a></h1>
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<pre class="rust rust-example-rendered">
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<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">backtrace</span>;
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<span class="kw">fn</span> <span class="ident">main</span>() {
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<span class="ident">backtrace</span>::<span class="ident">trace</span>(<span class="op">|</span><span class="ident">frame</span><span class="op">|</span> {
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<span class="kw">let</span> <span class="ident">ip</span> <span class="op">=</span> <span class="ident">frame</span>.<span class="ident">ip</span>();
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<span class="ident">backtrace</span>::<span class="ident">resolve</span>(<span class="ident">ip</span>, <span class="op">|</span><span class="ident">symbol</span><span class="op">|</span> {
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<span class="comment">// ...</span>
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});
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<span class="bool-val">false</span> <span class="comment">// only look at the top frame</span>
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});
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}</pre>
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